The following articles were originally published in the Gas Engine Magazine.
Written by Glenn Karch.
Click on the article title to see the article.

June 1992 Hercules Engine News Introduction to Hercules and the Model D Engine
July 1992 Hercules Engine News  
August 1992 Hercules Engine News Early Model E Engines
September 1992 Hercules Engine News Hercules and Economy engines begin to differ in design
October 1992 Hercules Engine News Thermoil Engines
November 1992 Hercules Engine News Variations from the norm
December 1992 Hercules Engine News Hercules Tractor and changes in the corporate structure
January 1993 Hercules Engine News The Hercules Factory
February 1993 Hercules Engine News  
March 1993 Hercules Engine News Thermoil Model U
April 1993 Hercules Engine News Thermoil Model UA
May 1993 Hercules Engine News The Cummins Connection
June 1993 Hercules Engine News The end of the Model E and introduction of Model F
July 1993 Hercules Engine News WICO Magneto introduced and Models FW and G
August 1993 Hercules Engine News 2HP, 2.25HP and 2.5 HP engine introduced in 1923
September 1993 Hercules Engine News Model N Engine
October 1993 Hercules Engine News Hercules Playing Cards
November 1993 Hercules Engine News Newspaper Cartoon about the Hercules Factory 1918
December 1993 Hercules Engine News Worker Killed at the Hercules Factory!
January 1994 Hercules Engine News The Largest Size Hercules Built
February 1994 Hercules Engine News The Model X series
March 1994 Hercules Engine News Dating your Hercules built engine
April 1994 Hercules Engine News Model D engines, not much different from Sparta CX
May 1994 Hercules Engine News Various Fuel Mixers
June 1994 Hercules Engine News Fuel Mixers continued
July 1994 Hercules Engine News Kerosene Carburetors
August 1994 Hercules Engine News An interview of former Hercules employee, Ora Garrison
September 1994 Hercules Engine News An interview of former Hercules employee, Fred Buente
October 1994 Hercules Engine News An interview of former Hercules employee, Rudy Hufnagel
November 1994 Hercules Engine News The Swamp Sparta - A 10 HP Sparta Economy Engine
December 1994 Hercules Engine News An interview of former Hercules employee, Walter Schnake
January, 1995 Hercules Engine News Installing the Cam gear and timing you Engine
February, 1995 Hercules Engine News Timing your engine
March, 1995 Hercules Engine News Tuning your engine to run at slow idle
April, 1995 Hercules Engine News Rebuilding your governor
May, 1995 Hercules Engine News Rebuilding the Head on the 1.5-2 H. P. Hercules
June, 1995 Hercules Engine News Repairing wear to the push rod
July, 1995 Hercules Engine News Repairing wear to the piston and cylinder
August, 1995 Hercules Engine News Crankshaft and bearing repair
September, 1995 Hercules Engine News Fuel Systems
October, 1995 Hercules Engine News How Many or Left?
November, 1995 Hercules Engine News Comments on Herc's seen at shows
December, 1995 Hercules Engine News Hercules Trade-marks and Decals
January, 1996 Hercules Engine News  Economy Trade-marks and Decals
February, 1996 Hercules Engine News Thermoil Trade-marks
March, 1996 Hercules Engine News Natural Gas/LP Mixers
April, 1996 Hercules Engine News Hercules Literature
May, 1996 Hercules Engine News How Hercules got in the engine business
June, 1996 Sparta Economy Engine News How Sparta got into the engine business
July, 1996 Sparta Economy Engine News Holm Machine Manufacturing Company
August, 1996 Sparta Economy Engine News Employee letter about Holm's Machine Company
September, 1996 Sparta Economy Engine News Waterloo built Economy Engines
October, 1996 Sparta Economy Engine News Sears and Holms relationship and patents
November, 1996 Hercules Engine News Hercules engines at the shows....
December, 1996 Sparta Economy Engine News Sparta, the early years...
January , 1997 Sparta Economy Engine News Model A and B Sparta Engines
February, 1997 Sparta Economy Engine News Model C Sparta Engines
March, 1997 Sparta Economy Engine News More Sparta engines
April, 1997 Sparta Economy Engine News Engines that look alike
May, 1997 Sparta Economy Engine News  More Engines that look alike
June, 1997 Sparta Economy Engine News The 5 look alike engines.
July, 1997 Sparta Economy Engine News Sparta Engine new models.
August, 1997 Sparta Economy Engine News Statistics on Sparta Engines
September, 1997 Hercules Engine News New Hercules and Economy finds....
October, 1997 Hercules Engine News Carts for Hercules Engines
November, 1997 Hercules Engine News Carts for Hercules Engines (part 2)
December, 1997 Hercules Engine News Arco brand Engines
January, 1998 Hercules Engine News Common questions about Hercules built engines
February, 1998 Hercules Engine News Karch family Hercules comes home.
March, 1998 Hercules Engine News  Painting your Hercules engine (part 1)
April, 1998 Hercules Engine News Painting your Hercules engine (part 2)
May, 1998 Hercules Engine News Other brands of Hercules built engines
June, 1998 Sparta Economy Engine News  Pin striping on Sparta Economy Engines
July, 1998 Hercules Engine News  Recent finding on Hercules Built Engines
August, 1998 Hercules Engine News  Misc. info on Hercules built engines.
September, 1998 Hercules Engine News  Classic Iron Show Report
October, 1998 Hercules Engine News Aftermarket Natural Gas Conversions
November, 1998 Hercules Engine News Non-restored engines.
December, 1998 Hercules Engine News Economy oil and Bow-tie Decal
January, 1999 Hercules Engine News Misc. Hercules Engine News
February, 1999 Hercules Engine News Hercules engines on Log Saws - Drag Saws
March, 1999 Hercules Engine News Hercules Factory Whistle and XK Engine
April, 1999 Hercules Engine News Timing your Hercules built engine.
May, 1999 Hercules Engine News Bournival R Company, La Fonderie De Plessisville Co.
June, 1999 Hercules Engine News How Many Different Models Were Produced?
July, 1999 Hercules Engine News  Misc. info about Hercules engines
August, 1999 Hercules Engine News Adjusting the WICO Magneto
September, 1999 Hercules Engine News  Big Hercules engines at SIAM Show
October, 1999 Hercules Engine News Sparta Model A Borrowed design from Waterloo
November, 1999 Hercules Engine News "J" series of Hercules Engines
December, 1999 Hercules Engine News Hercules Carts and Curiosities
January, 2000 Hercules Engine News Screen Cooled Engines
February, 2000 Hercules Engine News Misc. Facts and the Multi-cylinder Hercules engines of Canton, Ohio
March, 2000 Hercules Engine News How Glenn got started researching the Hercules Company
April, 2000 Hercules Engine News In the field ignition modifications
May, 2000 Hercules Engine News Hercules Drop Frame Carts - Peru Wheel and Plow Company
June, 2000 Hercules Engine News Hercules Log Saw Engines
July, 2000 Hercules Engine News Early engine production in Evansville - Model D and early E
August, 2000 Hercules Engine News Hercules Memorabilia
September, 2000 Hercules Engine News Hercules engines at work and the Plessisville built engines
October, 2000 Hercules Engine News A storm blows down a barn. full of engines
November, 2000 Hercules Engine News Restoration of Hercules engine #148306
December, 2000 Hercules Engine News Restoration of Hercules engine #148306 continued
January, 2001 Hercules Engine News Model T Thermoils
February, 2001 Hercules Engine News Atlas Engine Works, Indianapolis, Indiana
March, 2001 Hercules Engine News Replacing the Babbitt liners in the 1.5 HP Engines
April, 2001 Hercules Engine News Fuel System Checkup
May, 2001 Hercules Engine News How Hercules Engine Company came to be.
June, 2001 Hercules Engine News Flywheel Oddities
July, 2001 Hercules Engine News Flywheel Speed and design
August, 2001 Hercules Engine News Model SK Engines
September, 2001 Hercules Engine News Hercules Crank Handles
October, 2001 Hercules Engine News Differences in 3 H.P. Engines
November, 2001 Hercules Engine News 7 H.P. Half Base Project
December, 2001 Hercules Engine News 7 H.P. Half Base Project
January, 2002 Hercules Engine News Hercules Engine Oilers
February, 2002 Hercules Engine News 7 H.P. Half Base Project
March, 2002 Hercules Engine News 7 H.P. Half Base Project
April, 2002 Hercules Engine News Sparta Economy Engines
May, 2002 Hercules Engine News Hercules Registry Breakdown
June, 2002 Hercules Engine News Model X Engines
July, 2002 Hercules Engine News Model N Engines
August, 2002 Hercules Engine News Unraveling Production Dates
September, 2002 Hercules Engine News Rohaco, Brantford Twin, Small Clutch
October, 2002 Hercules Engine News Tale of Two Economy Engines
November, 2002 Hercules Engine News 1 1/2 H.P. Plessisville
December, 2002 Hercules Engine News Model SK
January, 2003 Hercules Engine News Economy Bowtie Decals
February, 2003 Hercules Engine News Model S Changes
March, 2003 Hercules Engine News Economy Family Tree
April, 2003 Hercules Engine News HVID Engines
May, 2003 Hercules Engine News Small Engine Hand Trucks
June, 2003 Hercules Engine News Governor Overhaul
July, 2003 Hercules Engine News Prices I Paid for Hercules Built Engines
August, 2003 Hercules Engine News The Hercules Legacy
September, 2003 Hercules Engine News Francis Vernier 1 3/4 H.P. Story
October, 2003 Hercules Engine News J Mixer For Natural Gas Attachment
November, 2003 Hercules Engine News 2 H.P. Jaeger Article and Pictures
December, 2003 Hercules Engine News ARCO With Spark Plug In Head, etc.
January, 2004 Hercules Engine News American Sawmill Machinery Engine
February, 2004 Hercules Engine News Hercules ignition systems
March, 2004 Hercules Engine News Waterloo Engines
April, 2004 Hercules Engine News ARCO Heirloom
May, 2004 Hercules Engine News The "Loane" engines
June, 2004 Hercules Engine News Small block fuel spouts
July, 2004 Hercules Engine News The Perkns story
August, 2004 Hercules Engine News Model A Sparta Economy
September, 2004 Hercules Engine News Model B Sparta Economy
October, 2004 Hercules Engine News Model C Sparta Economy
November, 2004 Hercules Engine News Model CA Sparta Economy
December, 2004 Hercules Engine News Model CX Sparta Economy
January, 2005 Hercules Engine News WICO Magneto Drives and Brackets
February, 2005 Hercules Engine News Webster Magnetos
March, 2005 Hercules Engine News Look Alike Plessisville
April, 2005 Hercules Engine News More on the Plessisville
May, 2005 Hercules Engine News More on the Plessisville
June, 2005 Hercules Engine News Plessisville Completed
July, 2005 Hercules Engine News Making an Oversize 1 1/2 H.P. Piston
August, 2005 Hercules Engine News Hercules 12 H.P. EK and Sprinkle Marker
September, 2005 Hercules Engine News Oddball Hercules Engines
October, 2005 Hercules Engine News Throttle-Governed Engines
November, 2005 Hercules Engine News ARCO Engine In Disguise
December, 2005 Hercules Engine News Equipping for Natural Gas
January, 2006 Hercules Engine News Building a Cylinder Head
February, 2006 Hercules Engine News Elkhart Magneto
March, 2006 Hercules Engine News Hercules Engine News Comes to an End

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